Automatic pressure relief device of ink-jet printer

The utility model discloses an automatic pressure relief device of an ink-jet printing machine, comprising an ink-jet printing machine, two sides of the ink-jet printing machine are fixedly connectedwith mounting plates, the lower surface of the ink-jet printing machine is fixedly communicated with a pressure relief pipe, the upper surface of the mounting plate at the left side is fixedly connected with a driving motor, and the output end of the driving motor is fixedly connected with a rotating shaft. The left end of the rotating shaft is fixedly connected with a first bevel gear, the uppersurface of the mounting plate on the left side is fixedly connected with an L-shaped supporting plate, and the lower surface of the L-shaped supporting plate is rotatably connected with a crankshaft.The pressure relief end of the pressure relief pipe is blocked by the baffle, when the pressure value is normal and pressure relief is not needed, use is convenient, through automatic operation of theelectric push rod, when pre